I was wondering if Google had their fonts "custom made" when they designed their logo? Or did the fonts already exist?
Many fonts look same to me, you can't see the difference between them. Google is a big company, they will use original and unique logo only, they would spend $$$$ to hire a designer to draw/design that logo. If you can find the font they are using, it's an interesting thing to know but I guess you will never find it out.
The current official Google logo was designed by Ruth Kedar, and is a logotype based on the Catull typeface - Wikipedia